What is the significance of the synthesis of mg Al spinel? What are the main approaches?
The spinel has high hardness, chemical stability, high melting point and good properties, high temperature resistance in various melt erosion is very strong, so the orebody in spinel, improve the high-temperature performance of the product. Although the spinel has the above properties, the natural magnesium aluminum spinel is very few and can not meet the needs. Therefore, the synthetic method is usually used in modern times.
Because the thermal expansion coefficient of magnesia alumina spinel is small, the thermal shock resistance of refractory products with its bonding phase is relatively improved.
The synthesis of magnesia alumina spinel mainly uses MgO and Al2O3 raw materials, and is obtained by electro melting, sintering or sintering
